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公开(公告)号：JP2001205153A
公开(公告)日：2001-07-31
申请号：JP2000353727
申请日：2000-11-21
Applicant: UNITED TECHNOLOGIES CORP
Inventor： IRELAND DENNIS M , OLSON WALTER E , SLEIGHT RYAN H , BARILOVICH PETER L
Abstract: PROBLEM TO BE SOLVED: To provide a fixture for easily masking only a selected part of a work piece. SOLUTION: The mask fixture is provided with a locator 10 provided with a vessel 40 surrounding the selected part of the work piece to be masked and a shield 26 for shielding a region selected from the surrounded part not to be in contact with a masking powder. To selectively apply the masking powder on a rout part 70 of a blade for a turbo machine, the rout part 70 of the blade is arranged in the vessel 40, the shield 26 is inserted into the vessel 40 and a boundary is formed between a damper pocket 74 to be coated and an attaching part 72 remaining as it is not coated. The masking powder is introduced into a several sections in the whole sections to surround the attaching part 72 with the masking powder.
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公开(公告)号：DE60032870T2
公开(公告)日：2007-10-25
申请号：DE60032870
申请日：2000-11-09
Applicant: UNITED TECHNOLOGIES CORP
Inventor： IRELAND DENNIS M , SLEIGHT RYAN H , OLSON WALTER E , BARILOVICH PETER L
Abstract: A fixture for selectively masking a turbine blade 60 includes a locator 10 with a separable receptacle 40 having portals 50. Guide bars 18 extend from the locator for guiding a pair of shield carriers 20 between deployed and retracted positions. Each shield carrier has a shield 26 projecting therefrom. In use, a turbine blade 60, whose root 70 includes a fir tree attachment 72 and a damper pocket 74, is mounted on the fixture so that the receptacle embraces the blade root. The shield carriers are translated along the guide bars until the shields penetrate through the portals and into the receptacle thus segregating the attachment 72 from the damper pocket 74. Masking powder 84 is then compressed into the receptacle to envelop the attachment while leaving the damper pocket unmasked. In one variant of the invention, the shields are independent, consumable shields 26a dimensioned and shaped to substantially conform to the size and shape of the damper pocket 74. The shields 26a are made of a thermally decomposable material and are wedged into the damper pockets 74 prior to blade masking. During the coating cycle, the shields 26a decompose at a temperature lower than the temperature at which coating vapors are produced to expose the damper pocket to the vapors.
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公开(公告)号：DE60032870D1
公开(公告)日：2007-02-22
申请号：DE60032870
申请日：2000-11-09
Applicant: UNITED TECHNOLOGIES CORP
Inventor： IRELAND DENNIS M , SLEIGHT RYAN H , OLSON WALTER E , BARILOVICH PETER L
Abstract: A fixture for selectively masking a turbine blade 60 includes a locator 10 with a separable receptacle 40 having portals 50. Guide bars 18 extend from the locator for guiding a pair of shield carriers 20 between deployed and retracted positions. Each shield carrier has a shield 26 projecting therefrom. In use, a turbine blade 60, whose root 70 includes a fir tree attachment 72 and a damper pocket 74, is mounted on the fixture so that the receptacle embraces the blade root. The shield carriers are translated along the guide bars until the shields penetrate through the portals and into the receptacle thus segregating the attachment 72 from the damper pocket 74. Masking powder 84 is then compressed into the receptacle to envelop the attachment while leaving the damper pocket unmasked. In one variant of the invention, the shields are independent, consumable shields 26a dimensioned and shaped to substantially conform to the size and shape of the damper pocket 74. The shields 26a are made of a thermally decomposable material and are wedged into the damper pockets 74 prior to blade masking. During the coating cycle, the shields 26a decompose at a temperature lower than the temperature at which coating vapors are produced to expose the damper pocket to the vapors.
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